Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Ananthakrishna Sarma"'
Publikováno v:
Natural Hazards. 44:317-327
By definition, a crisis is a situation that requires assistance to be managed. Hence, response to a crisis involves the merging of local and non-local emergency response personnel. In this situation, it is critical that each participant: (1) know the
A Godunov-Type Scheme for Atmospheric Flows on Unstructured Grids: Euler and Navier-Stokes Equations
Publikováno v:
Pure and Applied Geophysics. 164:217-244
In recent years there has been a growing interest in using Godunov-type methods for atmospheric flow problems. Godunov's unique approach to numerical modeling of fluid flow is characterized by introducing physical reasoning in the development of the
Autor:
Sundararaman Gopalakrishnan, Ananthakrishna Sarma, Mary S. Hall, David P. Bacon, Thomas J. Dunn, Nash′at N. Ahmad
Publikováno v:
Natural Hazards. 41:457-470
In the early days of computing, geophysical fluid dynamics (GFD), predominantly numerical weather prediction (NWP), was a dominant factor in the design of computer architecture and algorithms. This early work focused initially on finite difference al
Publikováno v:
Pure and Applied Geophysics. 163:1699-1735
This is the first paper in a two-part series on the implementation of Godunov-type schemes on unstructured grids for atmospheric flow simulations. Construction of a high-resolution flow solver for the scalar transport equation is described in detail.
Publikováno v:
International Journal for Numerical Methods in Fluids. 50:1247-1268
Twenty years ago, the multi-dimensional, positive definite, advection transport algorithm was introduced by Smolarkiewicz. Over the two decades since, it has been applied countless times to numerous problems, however almost always on rectilinear grid
Autor:
Zafer Boybeyi, Rangarao V. Madala, Sundararaman Gopalakrishnan, Ananthakrishna Sarma, Mary S. Hall, Pius Lee, David P. Bacon, Mark D. Turner, Thomas J. Dunn, Douglas E. Mays, Nash'at Ahmad, Yi Jin, Timothy R. Wait
Publikováno v:
Monthly Weather Review. 130:1830-1847
The Operational Multiscale Environment model with Grid Adaptivity (OMEGA) is an atmospheric simulation system that links the latest methods in computational fluid dynamics and high-resolution gridding technologies with numerical weather prediction. I
Autor:
David P. Bacon, Thomas J. Dunn, Mary S. Hall, Tim R. Wait, Nash'at Ahmad, R. Ananthakrishna Sarma, Pius Lee, Zafer Boybeyi
Publikováno v:
Journal of Applied Meteorology. 40:1541-1558
The Operational Multiscale Environment Model with Grid Adaptivity (OMEGA) is a multiscale nonhydrostatic atmospheric simulation system based on an adaptive unstructured grid. The basic philosophy behind the OMEGA development has been the creation of
Autor:
Zafer Boybeyi, Mark D. Turner, Mary S. Hall, David P. Bacon, Steve H. Young, Thomas J. Dunn, R. Ananthakrishna Sarma, Nash'at Ahmad, Kenneth T. Waight, Pius Lee, John W. Zack
Publikováno v:
Monthly Weather Review. 128:2044-2076
The Operational Multiscale Environment Model with Grid Adaptivity (OMEGA) and its embedded Atmospheric Dispersion Model is a new atmospheric simulation system for real-time hazard prediction, conceived out of a need to advance the state of the art in
Publikováno v:
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition.
The Euler equations are solved for non-hydrostatic atmospheric flow problems in two dimensions using the Conservation Laws Package (CLAWPACK) with adaptive mesh refinement (AMR). The CLAWPACK software uses high-resolution wave propagation methods (Le
Publikováno v:
47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition.
*† ‡ § The Operational Multiscale Environment model with Grid Adaptivity (OMEGA) is used to simulate an episode of the Santa Ana winds over Southern California. The OMEGA model is based on an unstructured adaptive grid. The use of an unstructure